1 /* $OpenBSD: vmparam.h,v 1.4 2015/06/24 21:35:01 miod Exp $ */ 2 /* $NetBSD: vmparam.h,v 1.23 2003/05/22 05:47:07 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1988 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef _MACHINE_VMPARAM_H_ 34 #define _MACHINE_VMPARAM_H_ 35 36 #define ARM_KERNEL_BASE 0xc0000000U 37 38 /* Allow armv7 to have bigger DSIZ than generic arm, allow user to override */ 39 #ifndef MAXDSIZ 40 #define MAXDSIZ (1024*1024*1024) /* max data size */ 41 #endif 42 #ifndef BRKSIZ 43 #define BRKSIZ MAXDSIZ /* heap gap size */ 44 #endif 45 46 #include <arm/vmparam.h> 47 48 #ifdef _KERNEL 49 /* 50 * Address space constants 51 */ 52 53 /* 54 * The line between user space and kernel space 55 * Mappings >= KERNEL_BASE are constant across all processes 56 */ 57 #define KERNEL_BASE ARM_KERNEL_BASE 58 59 #define VM_KERNEL_SPACE_SIZE 0x10000000 60 61 /* 62 * Override the default pager_map size, there's not enough KVA. 63 */ 64 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 65 66 /* 67 * Size of User Raw I/O map 68 */ 69 70 #define USRIOSIZE 300 71 72 /* virtual sizes (bytes) for various kernel submaps */ 73 74 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 75 76 /* 77 * max number of non-contig chunks of physical RAM you can have 78 */ 79 80 #define VM_PHYSSEG_MAX 2 81 #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM 82 83 /* 84 * this indicates that we can't add RAM to the VM system after the 85 * vm system is init'd. 86 */ 87 88 #define VM_PHYSSEG_NOADD 89 90 #endif /* _KERNEL */ 91 92 #endif /* _MACHINE_VMPARAM_H_ */ 93